Rotary pump and motor.



J.- M. WILSON. ROTARY PUMP AND MOTOR.

, APPLIOATION TILED SEPT. 26, 1912. 1,079,384,- Patented Nov. 25, 1913. 25 24 39 I I ITNESSES: INVENTOR,

- A TTORNE).

/ To all 'wl wm 2'25 may concern e e it known that I, JAMES MAXWELL, W

mamas 1m WIESONgor Tommi);

I cam-mo, mamma Ass-mm wo- STEVENSON, TRUSTEE,- or rorcom o; om'mmb; OANADAi.

IQAR'R'Y onrrroma ROTAZRIY- PUMP AN-D MOTOR.-

Specification'of Letters'Patemt-.-

- Patented Nov. 25; 191-3;-

.elp lieation filea se itember'aalelet seriai fioi-raizmv-f- SON, of'the city of Toronto,.county of York, in the Province of Ontario, Canada, have invented certainnew and useful Improvements in Rotary Pumps and Motors, of which the following is a specification.

his invention relates to rotary pumps and motors and has for its object to provide a machine adapted to be used either as a motor or as a pump inwhich the direction in which the rotors rotate may be reversed and' the speed of said rotors varied while" the flow' of the driving fluid is maintained in the same direct on; or 1n the case of a machine used quantity of fluid may be delivered in either direction with the rotors running at any constant sp'eedfin any one direction. I

A further object is to provide for the balancing of the internal? and external pressure upon 1 vane chamber of the machine whereby the bursting. efi ort' on said vane chamber is reduced to a minimum and a still' furtheroloject is to provide means for'bal ancing the lateral pressure upon the rotor and bearings for the purpose of reducing friction and consequent wear'upon' said bear ings and to increase the general efficiencyof the machine.

A still further;'

so that they will aut' wear either in themselves or in the interior oftlie vane chamber.

o attain these objects I- construct my rotary motor or pump with an outer casing or housing having suitable bearings therein in which the rotor and its shaft may be journaled, and an inner casing. or vans chamber which surrounds the rotor and is adapted'to be moved perpendicularly to the axisof' said rotor whereby the cylindrical bore of said vane chamber'may be adjusted in its eccentricity on either side of the said rotor. The inlet and outlet ports of thevane chamber are provided with sliort'tubular members extending therefrom'and movable longitudinally in cylindrical openings in the outer casing, the joint'bet'wee'n the tubular members andthe outer casing being provided'with' U shaped'w'a'sher's' whichwill allow; of'the escape of tubular members and the exterior of the vane chamber and so" fluid between the said object is to provide for the resilient pressing outward of the vanes omatic'ally take up anythe outer casing; to"

result in efficiency 'of' the; machine.

similar"- parts 'in the machine, endw'ise thrust f which has a pressure upon one or other side of therotor'wlien the machine' is in operation will be transmitted by 85 meansof said ducts tothe opposite Siaof the bearings thereby relieving the" lateral" pressure upon the casing or housingywliich' would otherwise producegreat friction and the' cous'equent material loss of I e rotor, asis usual, carries" the vanes" which are capable" of movement: in aplane radial to the axis of the-said rotor and their inner ends bear upon plainer frustomonicalroller of rollers, the faces of the said inner ends, where frusto-conical rollers are used being'suita'bly inclined so that they may conform to the conical surface of the said roller or rollers; The armugem nt is more full described so and illustrated in the following" descrip ti on; and the drawings*infwhiclig+ figure-1? is a sectional elevatioii of'a by; draulic rotary" machine constructed accordsection through the" vane" chamber of the same. 3 is an endyie'w of the inlet andexliaust perts and" Fig: 4 is a sectional detail view-showing the vanes and their supportingrellers; Similar cha'racteis" of reference indicate several figures of the drawings 1' is the" outer' casing or housing-of the machine, constructed in any suitable'manner. and ither of parts to facilitate" the assembling" of the same; and 2'; is the inner casingdr vanechainber slidablewitli in the saidouter casing 01" Housing.

Arranged axfia'llywitliin the outer" casing 1 is the rbtbr 3'whichconsis'ts of two'parts 4: and 5'coniiected together end toend by suitable screw bolts 6 or the like, the whol 7 being rotatablysuppoi-tedby tlie baflhbe'ar s Tand? alsojournaled in the annular-".105 liin bearings 8 8' in tlie" outer'casing :1. slia'ft g'js cennectedtbthe rotor'and ex tends axially therefihm throughthe eiid 'ofthe upon'thes'aid'shafh" 9 Being'taken' up bytlie' e li tfirusif bearing 11o 4 over position the said vane chamber may side of the rotor.

chine according t port 14 will herein I 5 vane chamber 2 w awhich abuts against an adjusting ring-11. on the side nearest to or farthest removed akage of from the machine along from the inlet and exhaust 'ports,acc ording the surface of'said shaft 9-is-prevented by to the directionwhicl the said vane means of a stufling box 12 whichmay be chamber is moved, the intermediate osi- 5 of any suitable construction. The rotor tion being that inwhich the rotor an the 3 is radially slotted to accommodate the vane chamber are concentric. Thus the latvanes 13 the outer ends of which are re- -era1 movem nt ofthe van c m er 2 wi tained in contact with the inner cylindriallow the hydraulic fluid to pass throu h cal surface of the vane chamber 2 at whatthe said chamber on either the near or ar -be in with respect to the rotor 3. The vanes 13. carried by th TO O are .The vane chamber 2 is provided'with, insupp rted by oppositelv disposed ,frusto-' let port 14 and outlet port 15 the openings conical rollers 23, carried, by a spindle 24' of which are coincident with the suction and "P ch n Of Said r l rs 3 S b 15 delivery openings 16 and 17 in the outer; nd (p essed tow rd he ot er r l er by a housing "or casin :of the machine, conneceoile s ring 25 or equivalent resilient tion being established between the ports in means. he inner endsof the vanes 13 are 7 the vane chamber and the openings16 and inclined towardthe center to conform with 1,? in the outer casing, bymeans. of short the conical sides of, the said rollers 23 in 20 tubular members ,18 and 19 fixed to said such manner that the tendency of the spring vane chamber, 2 and slidable in the said 25 to press the rollers 23 together forces the openings 16 and 17. It willbe understood said vanes 13 outwardly and so keeps their that either of the said :perts 14 or 15 may outer edges in contact with the inner cylinform the inlet ortlie, outletuport of the niadrioal surface of the vane chamber 2.

, c direction in, which One or more floating rollers may-be "used it is desired that theuidi shall flow, or, in if desired to form a bearing surface for the the case where the, if ,is used as a inner edges of th'e'vanes but this would or pump, the direction-'inj vrhlch the fluid. is course, only be applicable where more t an v driven, but for purposesipf clearness the two vanes were used, and the said rollers 'ferred to as the may be eithei lain or conical as desired, inlet port. 1 resilient means eing pro ided in the'case The fluidpressure within these'machines of a c'onical'roller or rollers to hold the .is often very high and a strong bursting same against correspondingly inclined ineffort is exerted ugon the inner walls of the nor faces of the vanes.

ich I reduce by allowing It will be seen that as the rotor 3 rotates, 10 the fluid under pressure to gain' access to the vane chamber being in an eccentric posithe outer walls of the said vane chamber 2 tion thereto, the vanes 13 will oscillate raand sotbal co the internal stress thereon, dially with respect to the. rotor axis while This is a'ccoinplished by means "of annular moving in a circular path with the said 40 grooves inthe 'outercasing 1 around the rotor 3. tubular .members 18 and ,19. in [which are In operation, assuming that the machine accommodated .leathe'r U shaped ackin is being used as a motor with" the parts in rings 20 'with their concave faces ispose the positions shown in the drawings and toward the vane chamber 2. The function fluid under pressure is entered by the port 5. of thesepacking rings 20 is to allo'wv of the 14:, the said fluid will ogcupy the s ace bepassage of fluid under pressure'between the tween the ends of the vanes 13. T is will tubular members'18, 19 and the walls of cause the said vanes to move around and the openin 16,17'to' thespace surrounding 'rotatethe rotor, the fluid assing in the the vane c amber 2 and to prevent leakage same direction down that sifie of the vane 50 from; the vane chambettoeither one of the. chamber farthest removed from the inlet openings. 16 or 17 in whiehthe ressure may port 14; and passing out through the port 15. be lower than in the vane chain r. f v v- By altering the eccentricity of the vane The vane chamber 2 is capable-of a jlatchamber 2 with ,res act .to the rotor 3- in eral movement with respect .to the axis of the manner already: described,the s ace be-' 55 the rotor 3 which is efiectedby means of-an tween the rotor and that side of t e vane'm o I casing, means,- sii operating rod 21 gassing throughthe outer- 'chainberjreferred to,.may be-decreased while as a, U shaped packing :at the same'tiine acorresponding increase in ring, being provided to-prevent'leakage at thespace between the rotor and the other this point. Grooves 22 are provid'ed'attthe sideiof the'va'nechambertakes place'w'hich 06 to and bottom of thevane chamber 2 to decreases the pressure "upon the descending a ow-the fluid-surrounding the same to pass vanes while acertain pro ortion of the. presfrom one side of theouter casing to the sure is exerted/against t e ascending vanes other when the said vane chamber is moved. which .resultszin the slower rotation of. the The lateral movement of the vane chamber said rotor. When the rotorand vane chams5 2 brings the {same to an eccentric position her are concentric the pressure upon the 5 intense reverse direction owing to the fact that the pressure would then be greater on the vanes v nearest-to the inlet than on the other vanes. The d rection and speed of rotati n of the rotor can therefore be. governed without alt rmgtbe pressure QKdiNQtiOH of flowof thetfluidd The. machine may be used as a pump by mechanically or otherwise rotating the rotor, thevanes then 0 f; drivi the hydraulic fluid either up one side or. awn the other side of the vane chamber according to the. position of the vane chamber 2 with respect. to the said rotor 3, the. direction of flow of the fluid hemgzreversed' or the delivery of the same controlled without altering the speed or direction of rotation of the said rotor 3. Or-

dinarily the pressure. upon the rotor wouldbe exerted upon that side of the same dis- I posed toward the inlet, where the machine 1s used as a motor, and upon the discharge side where the. machine is used as a pump, and this would result in great friction and wear in the bearings and consequently lossofefliciency in the machine To overcome this objection I provide means whereby hydranlic pressure may be transmitted. from the part in which the pressure exists to-the opposite side of the rotor, whereby the said pressure is balanced about the axls of the rotor. This is accomplished by providing upper and lower semi-annular channels 26 and 27 respectively in each of the annular plain bearlngs 8. 8' of the casing and conmeeting the upper channels 26 wit the lower port 15 by means of d ucts or holes 28 and the lower channels 2-? with the upper portl t by ducts 29, Should the fluid pressure be in the upper port 14; the said pressure will be transmitted alon the ducts 29 to the mi-annular chanae1 in bearings 8 and S0 counteract the lateral ressure upon therotor 3, the said ducts an channels being, of course, filled. with the s Hydraulic or gaseous fluid; may be used in this machine according to requirements or il. may he used wi h dv ntageia w ich case the oil Woul also serve to lubricate the parts and'would v ing of the machine.

In a machine of this type the use of valves, gearing or other undesirable mechanical complications for providing forthe'reversing or controlling of the machine is obviated. Further vibration in the machine is minimized owing to the constant velocity of the hydraulic fluid and the speed or direction of the fluid or of the rotor can be conti ll'ed'from trati e nd not in performing the function insure asmooth. work-Q of. the pressures both on the interior and exterior of the vane chamber and on op posite sides of'the rotor insures the' highest elficiency in the machine with minimum amount of friction,

This inventio may b develop within the Scope of the following claims without departingf om the e senti features of the same and it is desired that the specification n drawi gs be re d. as being merely illusa limiting sense except as necessitated by the prior art.

What I claim as my invention .is:.-

In a rotary machine the combination of an outer casing; a rotor revolu'ble Within said casing; vanes movably mountedn radial slots in said rotor; at vane chamber surroimding said rotor; oppositely disposed frustoconical rollers upon which correspondingly vanes bear; and resilient means tending to force the two rollers together.

2. In a rotary machine the combination ofsaid casing; a vane chamber said rotor, laterallymova and provided with inlet means for admitting fluid surrounding and outlet ports; pressure from the her; in -mirmnunication with each port; said means preventing fluid pressure passing in the reverse direction.

3. In a rotary machinethe combination of an outer casing; a rotor revoluble within said casing; a vane chamber surrounding said rotor laterally movable in said outer casing; inlet and outlet ports to said vane chamber, ports with openings in the outer casings an/d slidable therewithin; and U shaped Washers between said tubular members and said casing adapted to allow fluid under pressure to: gain access to the exterior of said vane chamber to balance the internal.- pres: sure.

an outer casingfa rotor revoluble' within said casing; a vane chamber surrounding said rotor, laterally movable in said outer casing; inlet and outlet ports in said vane chamber; tubular members connectedtheresaid casing; a; vane chamber surrounding zero to maximum, perfectly inclined; inner edges: of saidan 'outer casing; a rotor revoluble withinhis in said casing interior tov the exterior of said. vane cham for allowing the part of the outer an outer casing;'"a rotor revolubl within' said rotor laterally. movable in said outer casing; inlet and outletports ln-sa d vane ad a ed, without steps The balanc tubular members connectingsaid 4. In a rotary machine the combination of isc chamber; tubular members connected therewith] and slidable in openings in said outer casing; U shaped washers around said tubular members adapted to allow fluid under pressure to gain access to the exterior of said vane chamber; and grooves. at the top and bottom of said 'v'anechamber to allow of the passage of the fluid from one part of the casing to another when the vane chamber is moved laterally. W

6. In a rotary machine the combination of an outer asing; a rotor revoluble in said casing; hearings in the outer casing sup orting said rotor; a vane chamber movab e in said outer casing, surrounding said -rotor; upper and lower ports in said vane chamber; semi-annular channels above and below each of said bearings, independent one of the other; and ducts forming communication between said channels and the port on the opposite side of the rotor thereto.

7. In a rotary machine the combination of an outer casing; a rotor revoluble in said casing; bearings in said outer casing supporting the rotor; a vane chamber laterally movable in said outer casing surrounding said rotor; upper and lower ports in said I vane chamber; upper and lower semi-annw lar grooves in said bearings each in communication with'the port on the opposite side of the rotor; and means for distributing fluid pressure to the exterior of the vane chamber. I

, '8. In a rotary machine the combination of an outer casing; a rotor revoluble therein;

'fbearings supporting the rotor; a laterally movable vane chamber surrounding said rotor; upper and lower ports in sa d v'ane chamber; corresponding openings in the tion with may gain'access to the exterior of the vane outercasing; upper and lowersemi-annular grooves in said bearings each in communicathe port on the opposite side of the rotor; tubular members connected with the ports, slidable in said corresponding openings; and U shaped washers surrounding said tubular membersso positioned that fluid chamber. ,"9. In a rotary machine the combination of an outer casing; a rotor Jrevoluble in saidcasing; more than two vanesmpuntedin- .thereto; and connected and oppositely .dle attached to one of said rollers,

radial'slots in said rotor; the said vanes having inclined inner faces; a 'vane chamber surrounding said rotor, movable with respect thereto; and connected and oppositely die posed frusto-conical rollers upon which the cones ondingly inclined inner'faces of said 'vanes ear.

10. In a rotary machine the combination of an outer casing; a rotor revoluble in said casin more than two vanes mounted in radia slots in said rotor; the said vanes having inclined inner faces; avane chamber surrounding said rotor, movable with'respect posed frusto-conical rollers upon which the correspondingly inclined inner faces of said vanes bear and means for adjusting said rollers toward one another.

11. In a rotary machine the combination of an outer casing; a rotor revoluble insaid casing; more than two vanes mounted in radial slots in said rotor, the said vanes having inclined inner faces; a vane chamber surrounding said rotor, movable with respect thereto; oppositely I disposed frustoconical rollers upon which the said correspondingly inclined inner faces of said vanes bear; a spindle attached to one of said rollers, the other roller being slidable thereon, and a spring u on said spindle tendin to f rce the slida le roller toward the ed ro ler. a

12. In a rotary machine the combination of an outer casing; a rotor revoluble within said casing; vanes movably mounted in radial slots in said rotor, said vanes having inclined inner. faces; a vane chamber surrounding said rotor and adaptedto be moved to a position on e'ther side of said rotor; oppositely disposed frusto-conical rollers upon which the said correspondingly rn- .clined inner faces of said vanes bear; a spinthe other roller being slidable thereon; and a spring upon said spindle tending to force the slidable roller toward the fixed roller.

Toronto, this 3rd day of September 1912. JAMES M. WILSON.

4 Signed in the presence of WALTER Tm,

F. I. Wonc'n. 

